28211149759061 has 2 divisors, whose sum is σ = 28211149759062. Its totient is φ = 28211149759060.

The previous prime is 28211149758821. The next prime is 28211149759063. The reversal of 28211149759061 is 16095794111282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26367393136561 + 1843756622500 = 5134919^2 + 1357850^2 .

It is a cyclic number.

It is not a de Polignac number, because 28211149759061 - 2²² = 28211145564757 is a prime.

Together with 28211149759063, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28211149758988 and 28211149759006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28211149759063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14105574879530 + 14105574879531.

It is an arithmetic number, because the mean of its divisors is an integer number (14105574879531).

Almost surely, 2^{28211149759061} is an apocalyptic number.

It is an amenable number.

28211149759061 is a deficient number, since it is larger than the sum of its proper divisors (1).

28211149759061 is an equidigital number, since it uses as much as digits as its factorization.

28211149759061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 28211149759061 in words is "twenty-eight trillion, two hundred eleven billion, one hundred forty-nine million, seven hundred fifty-nine thousand, sixty-one".